One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(7,11)(10,12)(13,14,20,26)(15,27,32,38)(16,22,17,23)(18,25,19,24)(21,30,39,31)(28,43,33,37)(29,40,44,36)(34,42,35,41)(6,9)(7,11)(13,15,20,32)(14,21,26,39)(16,33,17,28)(18,31,19,30)(22,40,23,36)(24,27,25,38)(29,34,44,35)(37,41,43,42)(2,4)(5,6)(7,10)(8,9)(11,12)(13,16)(14,22)(15,28)(17,20)(18,35)(19,34)(21,36)(23,26)(24,42)(25,41)(27,43)(29,30)(31,44)(32,33)(37,38)(39,40) involution — undirected(6,9)(10,12)(13,17,20,16)(14,23,26,22)(15,29,32,44)(18,35,19,34)(21,37,39,43)(24,42,25,41)(27,40,38,36)(28,31,33,30)(5,7,8,11)(6,10,9,12)(13,18,20,19)(14,24,26,25)(15,30,32,31)(16,34,17,35)(21,38,39,27)(22,41,23,42)(28,44,33,29)(36,43,40,37)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.